Sofa-bed



W. L. MURPHY.

SOFA BED.

APPLICATION HlED AUG-31.1918.

Patented June 3, 1919.

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UNITED STATES PATENT OFFICE.

WILLIAM L. MURPHY, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO DEWEY DAVENPORT COMPANY, OF sAN FRANGISOO, JALIIIEOCRN IA, A CORPORATION OF CALIFORNIA.

SOFA-BED.

Specification of LettersPatent.

Patented June 3, 1919.

Application filed August'31, 1916. Serial No. 117,882.

To all whom it may concern.

Be it known that I, VVI'LLIAM L. MURPHY, a citizen of the United States, and a resident of the city and county of San Francisco, State of California, have invented a new and useful Sofa-Bed, of which the following is a specification.

My invention relates to folding beds and particularly to that class of beds which are adapted to be converted into sofas.

An object of my invention is to provide a bed with wire and upholstered mattresses, all of standard size, which is capable of being converted into a sofa by folding.

Another object of my invention is to provide a sofa of compact form in the interior of which is concealed a deep coil spring mattress and an upholstered mattress of standard thickness and size.

Another object of the invention is to provide a structure of the class described which is unfolded into a standard bed in a single movement.

. Another object of the invention is to provide a Structure of the class described in which a two-part bed frame is folded into a space not materially longer than the width of the frame.

The invention possesses other features of advantage, some of which, with the foregoing, will be set forth in the following description of the preferred form of my inven tion which is illustrated in the drawings accompanying and forming part of the specification. not limit myself to the showing made by the said drawings and description, as I .may adopt variations of the preferred form with in the scope of my invention as set forth in the claims.

Referring to the drawings:

Figure 1 is a vertical section through the bed of my invention when folded into the sofa form.

Fig. 2 is a vertical section through the structure when extended to form a bed.

Figs. 3 and 4 are elevations similar to Figs. land 2 respectively, but with the mattresses omitted to better disclose the mechanlsm.

Fig. 5 is an elevation showing a modified form of the structure.

Broadly, myinvention comprises a sofa in which a two-part bed frame is arranged below and behind the seat and back ofthe sofa in such a way that with a'si'ngle, easily'con It is to be understood that I do trolled movement, the bed frame is turned outwardly to extended horizontal position.

The manner of arranging the parts permits a deep coil spring and a standard thickness upholstered mattress to be mounted on the bed frame while retaining a normal size of sofa structure. Preferably the proportions and arrangements are such that the width of the bed form is the same as the length of the sofa form of the structure. This makes it unnecessary to provide a sofa as long as a standard bed and is one of the advantages possessed by my invention.

Referring first to Figs. 3 and 1, a main frame or stationary structure 7 is provided in which the sofa bed of my invention is arranged. A seat frame 8 provided with a suitably upholstered seat 9 is pivoted to the end walls of the stationary structure, the pivots 12 being well toward the front. The seat frame 8 is adapted to turn upwardly and outwardly about the pivots 12 to a horizontal inverted position as shown in Fig. a}. A two-part bed frame is provided, one part 14 is pivoted to the scat frame 8, the pivot 15 connecting the seat frame to an extension arm 11" formed integral with the bed frame 14. Normally as shown in Fig. 3, this frame 14 is in an upright position. Attached by the pivots 18 to the lower end of the frame 11 is the second part 19 of the bed frame. The frame 19 is also provided with an extension arm 19 which is secured by the pivots 21 to the stationary structure 7. The frame 19 is adapted to turn upwardly and outwardly about the pivots 21 to an inverted horizontal position as shown in Fig. 4 and because of the extension arms 19 the frame 19 is materially raised when inverted and lies above the inverted position of the seat frame 8.

As Will be noted from the above, the bed frame 14 is carried upon the seat frame 8 and the bed frame 19, both the latter separarately pivoted to the stationary or main structure 7. As a result its movement and position are controlled by the movement and position of the frames 8 and 19, which are in turn related by their connection to the frame 14. The structure formed by the three frames 8, l4 and 19 is therefore movable about the pivots 12 and 21 and the proportions of the several members are such that at the conclusion of the movement about the pivots the two bed frames 14 and 19am alined in horizontal position above the seat frame In order to prevent too far a movement of the frames and insure perfect alinement, a pad 23 is preferably formed on the under side of the frame 14 to contact with the upper side of the inverted seat frame. Another elfeet of this connection as clearly sllOWll in Fig. 4- is that it constitutes the seat frame a n extension, rigid against downward pressure-i. of the outer or foot frame 14. That is. in extended position the inner end of the foot frame 11- is supported through the seat frame 8, upon the )ivot 12; and the head frame 19 is supporte in horizontal position upon its own pivoted connection 21 and by its pivotal connection 18 with the foot frame 14.

Means are provided for supporting the outer end of the foot frame upon the floor in the extended position of the frames and for this, preferably the back frame 25 of the sofa is utilized. The frame 25 which is suit ably upholstered in front is connected to the foot frame 14. by pivots 2G and is adapted to be carried forward in the unfolding movement of the frames to form a leg under the outer end of the frame 14. Preferably the proper position of the back fral'ne 25 in both sofa and bed forms of my invention is assured by a link 28 connecting the arm 29 on the back frame to a point 31 on the head frame.

The link 28 is not essential to the working of the frames and in Fig. 5 I have shown a structure in which the link is omitted. As the foot frame 14 moves outward, the back frame 25 hanging from its pivots, will naturally take a vertical position under the end of the frame. A pin 32 may be provided on the frame to engage an ear 33 on the leg and limit its outward movement,

There is a decided advantage in arrang ing the bed frame so that only the outer end of the foot needs extra support on the floor. It eliminates all need of intermediate legs and thus inequalities in the fioor or floor coverings cause no trouble.

Means are provided for balancing the weight of the frames so that only a small effort is needed to fold or unfold them. An extension arm 35 is formed on one side of the head frame 19 and a coil spring 36 of suitable strength connects this arm to a point 37 on the stationary structure. The location of the.arm 35 and the point 37 is such that the spring 36 is under tension in both the folded and extended positions of the frames. In the folded position as seen in Fi 3, the spring tends to initiate the unfol ing movement and as seen in Fig. 4, the spring tends to initiate the folding movement of the frames. By changing the location of the spring 36 to connect the end of the frame 19 to a point 37" lower down in the stationary structure as shown in Fi 5, thepull of the spring tending to unfo (1 the frames when in the folded position is materially lessened, and I may construct my sofa bed with the spring in this position.

A top board 41 is secured to the edge of the frame 14- and loops 42 conveniently lo cated under the edge of the top board furnish hand holds for tmfolding the frames. Preferably the head eml of the head frame 1.) is provided with an extension frame 44 connected thereto by pivots 45. In the folded position of the frames, Fig. 3, the extension frame 44 hangs below the frame 19, but when the frame 19 is inverted, Fig. 4, the extension frame is maintained in horizontal alinement therewith by means of the stop pin 4.6. I may, however, construct my sofa bed Without extension frame, as shown in Fig. 5.

Arranged upon the rear side of the foot frame 11 and the under side of the head frame 19 are coil spring mattresses 49 and 51 respectively as shown in Fig. 1. Preferably a single, row of springs 52 is also arranged upon the extension frame 41. The coils 53 of the spring mattresses are of ample depth to provide a bed of maximum comfort. On the rear and under side of the spring mattresses as shown in Fig. 1 an upholstered mattress 55 of standard thickness is secured in any suitable manner, the mattress taking an L-form when the frames are folded, part lying behind the back of the sofa and part lying below the seat. Owing to this arrangement the mattress may be of full standard thickness. \Vhen the bed is unfolded as shown in Fig. 2, a standard size bed is provided with coil spring mattress and upholstered mattress of a depth and comfort unusual in any type of fixed or stationary bed.

To avoid undue strain upon the link 28 and to position the back when the link is not included, stops 61 are arranged on the sta tionary structure, against which the back abuts when the frames are folded. Similar stops 62 are arranged to position the seat frame when folded. The support thus supplied is in addition to that furnished by the top board 41 abutting against the top of the stationary structure.

I claim:

1. In a device of the class described, a stationary structure, a head frame pivoted directly to said stationary structure, a seat frame pivotally mounted in said stationary structure and a foot frame pivotally mount-- ed on both said seat frame and said head frame.

2. In a device of the class described, a stationary structure, an invertible head frame pivotally mounted in said stationary structure, a foot frame ivotally connected to the outer edge of sai' head frame when inverted, and means connectin said stationar structure to the foot frame at, a point eyond the pivotal connection of said foo-t frame With the head frame for supporting the outer edge of said head frame and the inner edge of said foot frame upon said stationary structure.

3. In a device of the class described, a stationary structure, an invertible head frame pivotally mounted. in said stationary structure, a foot frame connected to said head frame and extending outwardly from said stationary structure when said head frame is inverted, and means pivoted to said foot frame and to said, stationary structure for supporting said foot frame upon said stationary structure when said foot frame is in the extended position.

4. In a device of the class described, a stationary structure, an invertible head frame pivotally mounted in said stationary structure, a foot frame pivotally connected to said head frame, a mattress arranged on the under side of said invertible frame and the rear side of said foot frame when said frames are folded within said structure, and a seat frame arranged in said stationary structure above said head frame.

In a. device of the class described, a stationary structure, an invertible head frame pivotally mounted on said stationary structure, a foot frame pivotally connected to said head frame, a seat frame pivotally mounted on said stationary structure and pivotally connected to said foot frame, and a mattress arranged on the under side of said head frame and the rear side of said foot frame when said frames are folded within said structure.

6. In a device of the class described, a stationary structure, a head frame pivoted on said stationary structure, a seat frame pivoted at a different point on said stationary structure, and a foot frame pivotally attached to said seat frame, said seat. frame and said head frame being invertible to mov said foot frame into alinement with said head frame.

7. In a device of the class described, a stationary structure, a seat frame pivoted on said stationary structure, a head frame pivoted at a different point on said stationary structure and adapted to be inverted to a position above said seat frame, and a foot frame connected to said head frame and adapted to be alined therewith when said head frame is inverted.

8. In a device of the class described, a stationary structure, an invertible head frame arranged in said stationary structure, a normally upright foot frame pivoted to said head frame and an invertible seat frame pivoted to said foot frame and to said stationar Y structure and normally overlying said hea frame.

9. In a device of the class described, a

stationary structure, a seat frame pivoted to said stationary structure, a head frame provided with extension arms intermediate its sides pivotal] y attached to said stationary structure, and a foot frame pivotally connected to said head frame and {provided with extension arms pivotally connected to said seat frame.

10. In a device of the class described, a stationary structure, a head frame arranged in said stationary structure, an invertible seat frame arranged in said stationary structure, a foot frame pivotally connected to both said seat and head frames and a back frame arranged upon said foot frame.

11. In a device of the class described, a stationary structure, a head frame pivoted to said stationary structure, a seat frame pivoted to said stationary structure, a foot frame pivoted to both said seat and head frames, a back frame arranged upon said foot frame and a link connecting said back frame to said head frame.

12. In a device of the class described, a stationary structure, a head frame pivotcd to said stationary structure, a seat frame pivoted to said stationary structure, a foot frame pivoted to both said seat and head frames. a back frame arranged upon said foot frame and an extension frame pivoted upon said head frame.

13. In a device of the class described, a stationary structure, a head frame arranged in said stationary structure, a seat frame arranged in said stationary structure, a foot frame pivotally connected to both said seat and head frames and an extension frame pivotally arranged upon said head frame.

14. In a device of the class described. a stationary structure, an invertible head frame pivoted to said stationary structure, a seat frame pivoted to said stationary structure and a foot frame normally supported by said seat and head frames, said foot frame being adapted to support said head frame when the latter is inverted.

15. In a device of the class described, a stationary structure, a head frame pivoted directly to said stationary structure and adapted to be extended therefrom, a foot frame pivotally attached to said head frame and adapted to be alined therewith when the head frame is extended from the stationary structure, and means pivoted to said foot frame and to said stationary structure for supporting the head and foot frames in alined position.

In testimony whereof I have hereunto set my hand at San Francisco, California, this 26th day of August, 1916.

WILLIAM L. MURPHY.

In presence of C. S. EVANS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0. 

